Dayum boi, what is it with you and picking fights with my characters?
Seriously though, be ready for the consequences that fighting a friggin' Admiral of the Alliance brings. Your advantage with Jered in Unsteady Ground, is that he's just a wanderer without any real importance in the government. Jon, however, could hire a private eye to track your ass, and any Admiral worth his salt will have the trust and loyalty of his/her subordinates. Just because Jonny himself can't kill you, doesn't necessarily mean that his soldiers can't do so, once the price gets put on your head.

Seriously though, you're better off trying to go for an unarmed bar-brawl, or something, because once you draw a blade or gun...say hello to "assault with deadly weapon" charges, bolstered by a high-ranking military plaintiff.